I fixed a bug in Logger#noConflict, where if no window.Logger originally existed, it would not return Logger upon return.
I fixed a bug where Logger.prototype.disableVerbosity would not return a self-reference, breaking chains.
Logger.prototype.{add,remove} no longer add to the global list of appenders.
I added a duplicate of the WARNING LoggerLevel, only it's named WARN allowing for the more common log.warn('blahblah').
I fixed a few bugs in which Logger.prototype.* functions were returning Logger instead of a self-reference.